| US Open - ženy | 08/23 15:00 | 14 | Elsa Jacquemot v Jana Čepelová | 6-2,6-2 | |
| Wimbledon - ženy | 06/28 15:40 | 15 | Jana Čepelová v Laura Siegemund | 3-6,4-6 | |
| Wimbledon - ženy | 06/27 15:40 | 14 | Olga Danilovic v Jana Čepelová | 5-7,6-7 | |
| WTA Gaiba | 06/20 12:15 | 25 | Laura Pigossi v Jana Čepelová | 3-6,6-3,6-1 | |
| WTA Ostrava | 10/17 14:25 | 45 | [55] Cori Gauff v Jana Čepelová [168] | 6-1,6-0 | |
| French Open - ženy | 09/22 13:00 | 14 | [162] Jana Čepelová v Jaqueline Cristian [167] | 2-6,6-7 | |
| ITF W25 Praha | 09/13 08:55 | 29 | [191] Renata Zarazua v Jana Čepelová [167] | 4-6,6-7 | |
| ITF W25 Praha | 09/12 08:25 | 28 | [167] Jana Čepelová v Oana Georgeta Simion [436] | 6-1,3-6,6-2 | |
| ITF W25 Praha | 09/11 10:55 | 27 | [306] Jesika Maleckova v Jana Čepelová [167] | 2-6,7-6,1-6 | |
| ITF W25 Praha | 09/10 07:50 | 26 | Miriam Kolodziejova v Jana Čepelová | 7-6,2-6,6-7 | |
| ITF W25 Praha | 09/08 11:30 | 25 | [229] Gabriela Talaba v Jana Čepelová [167] | 1-6,6-2,4-6 | |
| WTA Praha | 08/29 09:45 | 24 | [209] Chihiro Muramatsu v Jana Čepelová [167] | 7-6,1-6,6-2 | |
| WTA Lyon | 02/29 12:05 | 45 | [164] Jana Čepelová v Margot Yerolymos [330] | 6-7,1-6 | |
| WTA Doha | 02/22 11:45 | 46 | [68] Jil Teichmann v Jana Čepelová [163] | 7-5,6-2 | |
| WTA Doha | 02/21 13:40 | 45 | [163] Jana Čepelová v Varvara Gracheva [103] | 6-4,4-6,6-4 | |
| Australian Open - ženy | 01/15 02:00 | 44 | [162] Jana Čepelová v Kurumi Nara [137] | Retired | |
| Česká republika - Extraliga - ženy | 12/13 10:45 | - | [159] Jana Čepelová v Jesika Maleckova [339] | 6-3,6-1 | |
| WTA Tchaj-pej | 11/15 05:00 | 27 | [108] Vitalia Diatchenko v Jana Čepelová [173] | 6-1,6-1 | |
| WTA Tchaj-pej | 11/13 07:30 | 26 | [307] Ya-Hsuan Lee v Jana Čepelová [173] | 3-6,3-6 | |
| WTA Tchaj-pej | 11/11 05:45 | 25 | [180] Jana Čepelová v Tereza Martincová [130] | 6-3,6-1 | |
| ITF W100 Šen-čen | 11/08 04:35 | 27 | [144] Kurumi Nara v Jana Čepelová [180] | 7-6,7-6 | |
| ITF W100 Šen-čen | 11/07 01:55 | 26 | [180] Jana Čepelová v Nao Hibino [102] | 6-2,6-3 | |
| ITF W100 Šen-čen | 11/05 04:45 | 25 | [150] Xinyu Wang v Jana Čepelová [180] | 3-6,6-7 | |
| ITF W100 Szekesfehervar | 10/24 08:55 | 26 | [161] Martina Trevisan v Jana Čepelová [184] | 6-7,6-3,6-4 | |
| ITF W100 Szekesfehervar | 10/23 12:20 | 25 | [260] Dalma Galfi v Jana Čepelová [184] | 3-6,6-3,4-6 | |
| WTA Moskva | 10/15 10:10 | 25 | [155] Jana Čepelová v Ekaterina Alexandrova [38] | 1-6,4-6 | |
| WTA Moskva | 10/14 08:00 | 54 | Isabella Shinikova v Jana Čepelová | 5-7,4-6 | |
| WTA Moskva | 10/13 11:30 | 46 | Anastasia Zakharova v Jana Čepelová | 4-6,3-6 | |
| WTA Moskva | 10/12 15:00 | 45 | [141] Jana Čepelová v Ana Bogdan [131] | 1-6,6-4,6-3 | |
| WTA New Haven | 09/05 14:00 | 26 | [179] Usue Maitane Arconada v Jana Čepelová [153] | Retired |